Curbing mold



Patented fi st Ii,

ALBERT KLUGIE, QF 'il IILACA, MINITJESOTA,

CURBING IVLOIJD- Application filed March 22, 1821. Serial ZtTo,454;,392.

T 0 all ctr/tom it may concern Be it known that I, Annnnr KLUGE, acitizen of the United States, residing at Milaca, in the county ofMillelacs and State of Minnesota, have invented new and usefulimprovements in Curbing Molds, of which the following is aspecification.

This invention relates to well curbing, the primary object of theinvention being to provide a mold or form of such construction thatcurbing formed of plastic material, such as cement or the like, may beeasily and quickly produced, wherein the curbing is properly formed andheld until set and wherein theforms may be easily and quickly removedafter the curbing plastic has hardened. V

A further object of the invention is to provide mold orform devices ofsimple and inexpensive construction, which will be of light weight so asto be easily handled and yet which possess the necessary strength andrigidity to Withstand the handling which they must receive, which areequipped with means for making proper depressions in the completedcurbing to facilitate the application of novel handling means thereto,which may be locked firmly in proper or set up position, and which willprove thoroughly effective in operation.

"With these and other objects in view, the invention consists of thefeatures of construction, combination and arrangement of parts,hereinafter fully described and claimed, reference being had to theaccompanying drawings, in which:

Figure 1 is a vertical longitudinal sectional view taken through a moldor form constructed in accordance with the invention and showing thesame in the position the parts will assume when set up in position readyfor operation,

Figure 2 is a side elevation of the exterior form,

Figure 3 is a horizontal sectional view taken upon line 33 of Figure 1,

Figure is a view similar to Figure 2 and showing the exterior of theinner form.

Referring now more particularly to the drawings, 8 indicates the innercore or shell of the mold and 9 the outer shell thereof. These shells,as shown more clearly in Figure 3 of the drawings, are of cylindricalshape and are formed of thin sheet metal, the inner shell or core beingof substantially smaller diameter than the outer shell. The

outer shell is formed of a pair of semi-cylindrical sections 10,connected together at one edge by means of hinges 11 so that the samemay swing relative to each other, and the free edges of the sections 10are equipped with barrels indicated generally at 12 adapted to registerwith each other when the said sections are swung to closed positiomto receive a locking pin 13, The said free edges of the form sections arereinforced with strap iron as indicated at let, while the inner orhingedly connected edges of the said seotions are similarly reinforced.The free edge of one of the sections 10 of shell 9 is turned outwardlyso as to provide an eXtenface of each of the core sections 16 is provided with outwardly ro'ectin studs indicated at 20 arranged inuniformly spaced relation upon the said section. From an inspection ofthe drawings, and particularly l igures 3 and l thereof, it will beobserved that the exterior surface of core 8 is free from obstructionssave the outwardly projecting studs or formers 20, and it will be notedthat these formers are arranged near one end of the said core.

-When it is desired to cast or mold a well curbing, the outer and innershells, 98 are arranged with respect to each other as shown in Figures 1and 8 of the drawings. That is, the sections 10 are swung: to closedposition and locked by pin 13, while the sections 16 of the core 8 aresimilarly brought together. The core 8 is then disposed within the shell9 concentric thereto, and the space indicated at 21 between the innerand outer shells is filled with the plastic of which tne curbing is tobe formed. After the plastic has become set the forms are unlocked bywithdrawing pins 13 and 19, whereupon the said outer and inner shellsmay be removed from the tile or curbing. The curbing thus formed will beof hollow cylindrical construction, and upon the inner face thereofthere will be depressions caused by the formers or lugs 20 of core 8.

While the above is a description of the invention in its preferredembodiment, it will be understood that various changes may be made inthe minor details of construction and arrangement of parts withoutdeparting from the spirit of the invention as defined by the claims.

Having thus fully described my invention, I claim:

1. A mold for making well curbing comprising a cylindrical outer shelland a cylindrical inner shell adapted to be disposed in said outershell, each of said shells comprising a pair of semi-cylindricalsections having abut-ting edge portions, the edge portions at one sideof the shell being hingedly connected and the edge portions at the opposite side of the shell being provided with fastening means todetachably hold the same connected andthe shell closed, the said innershell being provided in close proximity to one end thereof with anannular series of external projections to form a corresponding series ofannular recesses in the outer surface of a section of curbing moldedbetween the shells, said projections being fixed to and projecting fromthe semi-cylin drical sections of said shell.

2. A mold for making well curbing comprising a cylindrical outer shelland a cylindrical inner shell adapted to be disposed in said outershell, each of said shells comprising a pair of semi-cylindricalsections having abutting edge portions, the edge portions at one side ofthe shell being hingedly connected and the edge portions at the oppositeside of the shell provided with fastening means to detachably hold thesame connected and the shell closed, the said inner shell being providednear one end with an annular series of external projections fix edlysecured to said semi-cylindrical shell sections to form a correspondingseries of recesses in the outer surface of a sect-ion of curbing moldedbetween the shells, one of the semi-cylindrical sections of the outershell being extended and bent outwardly at right angles beyond the outerside of said shell to form a supporting flange, and reinforcing stripsupon the free edges of said semi-cylindrical sections of the outer shellto bear against said flange when said shell sections are closed.

3. A mold for making well curbing comprising a cylindrical outer shelland a cylindrical inner shell adapted to be disposed in said outershell, each of said shells comprising apair of semi-cylindrical sectionshaving abutting edge portions the edge portions at one side of the shellbeing hingedly connected and the edge portions at the opposite side ofthe shell being provided with fastening means to detachably hold thesame connected and the shell closed, the said inner shell beingprovided. near one end with an annular series of external projections toform a corresponding series of recesses in the outer surface of asection of curbing molded between the shells, and one of thesemi-cylindrical sections of the outer shell being extended and bentoutwardly at right angles beyond the outer side of said shell to form asupport separate from and independent cf said fastening means.

In testimony whereof I afiiX my signature.

ALBERT KLUGE.

